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Remdesivir INN: Uses,Dosage,Side Effects

Generic Name
Remdesivir INN
Therapeutic Class:
Anti-Viral

Indications:
Authorized use
Emergency use of Remdesivir for the treatment of suspected or laboratory-confirmed Corona Virus Disease 2019 (Covid-19). Severe disease is defined as patients with oxygen saturation (SpO2) ≤94% on room air or requiring supplemental oxygen or requiring mechanical ventilation or requiring extracorporeal membrane oxygenation (ECMO). Specifically, Remdesivir is only authorized for hospitalized adult and pediatric patients for whom the use of an intravenous agent is clinically appropriate.

Presentation:
Remdesivir INN 100 IV Infusion: Each vial contains Remdesivir INN 100 mg as a lyophilized powder

Description:
Remdesivir is a prodrug of a modified adenine nucleoside analogue. Remdesivir undergoes efficient metabolic conversion in cells and tissues to active nucleoside triphosphate metabolite that inhibits viral RNA polymerases. Remdesivir is highly selective for viral polymerases and is therefore expected to have a low propensity to cause human toxicity. Remdesivir has a wide therapeutic index in a human airway epithelial cell model. It also displays a high genetic barrier to resistance in different viruses and has a long intracellular half-life.

Dosage & Administration:
General Information
• Adult and pediatric patients (>28 days old) must have an eGFR determined and full-term
neonates (≥7 days to ≤28 days old) must have serum creatinine determined before dosing of
Remdesivir.
• Hepatic laboratory testing should be performed in all patients prior to starting Remdesivir
and daily while receiving Remdesivir.
• Remdesivir should be administered via intravenous (IV) infusion only. Do not administer as
an intramuscular (IM) injection.
Adult Patients
• The recommended dosage in adults requiring invasive mechanical ventilation and/or ECMO
is a single loading dose of Remdesivir 200 mg on Day 1 followed by once-daily maintenance
doses of Remdesivir 100 mg for 9 days.
• The recommended dosage in adults not requiring invasive mechanical ventilation and/or
ECMO is a single dose of Remdesivir 200 mg on Day 1 followed by once-daily maintenance
doses of Remdesivir 100 mg for 4 days. If a patient does not demonstrate clinically
improvement, treatment may be extended for up to 5 additional days (i.e., up to a total of 10
days).
• Remdesivir is to be administered via intravenous infusion in a total volume of up to 250 mL
0.9% saline over 30 to 120 minutes.

Pediatric Patients
The recommended pediatric dose for pediatric patients weighing between 3.5 kg and <40 kg
should be calculated using the mg/kg dose according to the patient’s weight.
• For pediatric patients with body weight between 3.5 kg and <40 kg, use Remdesivir for
injection, 100 mg, lyophilized powder only. Administer a body weight-based dosing regimen of
one loading dose of Remdesivir 5 mg/kg IV (infused over 30 to 120 min) on Day 1 followed by
Remdesivir 2.5 mg/kg IV (infused over 30 to 120 min) once daily for 9 days (for pediatric
patients requiring invasive mechanical ventilation and/or ECMO, days 2 through 10) or for 4
days (for pediatric patients not requiring invasive mechanical ventilation and/or ECMO, days 2
through 5). If a patient does not demonstrate clinical improvement, treatment maybe
extended for up to 5 additional days (i.e., up to a total of 10 days).
• For pediatric patients with body weight ≥40 kg requiring invasive mechanical ventilation
and/or ECMO, the adult dosage regimen of one loading dose of Remdesivir 200 mg IV
(infused over 30 to 120 minutes) on Day 1 followed by Remdesivir 100 mg IV (infused over 30
to 120 minutes) once daily for 9 days will be administered.
• For pediatric patients with body weight ≥40 kg not requiring invasive mechanical ventilation
and/or ECMO, the adult dosage regimen of one loading dose of Remdesivir 200 mg IV
(infused over 30 to 120 minutes) on Day 1 followed by Remdesivir 100 mg IV (infused over 30
to 120 minutes) once daily for 4 days (days 2 through 5) will be administered. If a patient does
not demonstrate clinical improvement, treatment may be extended for up to 5 additional days
(i.e., up to a total of 10 days).

Reconstitution Instructions
• Aseptically reconstitute Remdesivir lyophilized powder by addition of 19 mL of Sterile Water
for Injection using a suitably sized syringe and needle per vial.
• Discard the vial if a vacuum does not pull the Sterile Water for Injection into the vial.
• Immediately shake the vial for 30 seconds.
• Allow the contents of the vial to settle for 2 to 3 minutes. A clear solution should result.
• If the contents of the vial are not completely dissolved, shake the vial again for 30 seconds
and allow the contents to settle for 2 to 3 minutes. Repeat this procedure as necessary until
the contents of the vial are completely dissolved.
• Following reconstitution, each vial contains 100 mg/20 mL (5 mg/mL) of Remdesivir solution.
• Parenteral drug products should be inspected visually for particulate matter and discolouration
prior to administration, whenever solution and container permit.
• After reconstitution, the total storage time before administration should not exceed 4 hours at
room temperature or 24 hours at refrigerated temperature (2°C to 8°C).

Dilution Instructions
• Care should be taken during admixture to prevent inadvertent microbial contamination. By using the table below, please determine the volume of 0.9% saline to withdraw from the infusion bottle. It is always recommended to administer IV medication immediately after preparation when possible.

Side Effects:
An adverse reaction associated with Remdesivir in clinical trials in healthy adult subjects was increased liver transaminases.

Precautions:
There are limited clinical data available for Remdesivir. Serious and unexpected adverse events may occur that have not been previously reported with Remdesivir use.

Use in Pregnancy & Lactation:
No adequate and well-controlled studies of Remedesivir use in pregnant women have been conducted. Remdesivir should be used during pregnancy only if the potential benefit justifies the potential risk for the mother and the fetus. There is no information regarding the presence of Remdesivir in human milk, the effects on the breastfed infant, or the effects on milk production. Because of the potential for viral transmission to SARS-CoV-2-negative infants and adverse reactions from the drug in breastfeeding infants, the developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Remdesivir and any potential adverse effects on the breastfed child from Remdesivir or from the underlying maternal condition.

Storage:
Keep away from light and out of the reach of children. Please do not reuse or save unused Remdesivir lyophilized powder, injection solution, or diluted solution for infusion for future use. This product contains no preservative.

Lyophilized Powder
• Please store Remdesivir for injection, 100 mg, vials below 30°C until required for use. Do not use it after the expiration date.
• After reconstitution, vials can be stored up to 4 hours at room temperature (20°C to 25°C) prior to administration or 24 hours at refrigerated temperature (2°C to 8°C). Please dilute within the same day as administration.

Diluted Solution for Infusion
Please store diluted Remdesivir solution for infusion up to 4 hours at room temperature (20°C to 25°C) or 24 hours at refrigerated temperature (2°C to 8°C).

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